Abraham j



(No Model.)

A. J. NEFF. sIcKLE GRINDER.

No. 485,973. Patented Nov. 8,1892.

THE :mums ravens co. PHoTaLITHo.. wAsmNsToN, o c

`zen of the United States, residing at Goshen, l in the county ofElkhart and State of Indiana,

UNTTED STATES PATENT OFFICE.

ABRAHAM J. NEFF, OF GOSHEN, INDIANA, ASSIGNOR TO VILLIAM B. LEHMAN, OFSAME PLACE.

SlCKLE-GRINDER.

SPECIFICATION forming part of Letters Patent No. 485,973, dated November8, 1892.

Application tiled April 29, 1892.

T0 all whom it may concern:

Beit known that I, ABRAHAM J. NEFF, a citihave invented a new and usefulvSickle-Grinder, of which the following is a specification.

Y The invention relates to improvements in sickle-grinders.

The object of the present invention is to simplify and improve theconstruction of sickle-grinders and to enable the saine to be readilycontrolled and manipulated to grind the teeth of a sickle as desired.

The invention consists in the construction and novel combination andarrangement of parts hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure l is a perspective view of a sickle-grinderconstructed in accoi-dance with this invention. Fig. 2 is a transversesectional view. Fig. 3 is a detail sectional view.

Like numerals of reference indicate corresponding parts in all thefigures of the drawings.

l designates a supporting-base, upon one end of which :is secured acircular supportingplate, which forms a bearing for a rotating plate 4,carrying a standard 5 and adapted to be turned to bring agrinding-roller 6 in proper position to bear against the edges of theteeth of the sickle -'bar. The rotating plate 4 is provided withvertical lugs 7, to which are pivoted the sides of the diverging orforked standard 5, which is adapted to swing on the pivot-bolts 8, whichsecure it to the said lugs. The upper end of the standard is providedwith a socket 9, and secured therein by set-screws l0 is a shaft ll,having its ends reduced and having mounted on its outer end a master ordrive wheel l2 and having its inner end arranged in the said socket andforming a pintle of the grinding-frame 13, which carries thegrinding-roll 6, whereby the grinding-frame is hinged to the upper endof the standard and is adapted to be swung with the shaft, acting as apintle. The grinding frame is approximately U-shaped, having the stemportion 15 bifurcated to receive the up- Serial Nn. l131,171. (Nomodel.)

per end of the standard and having its sides 16 straight near their endsand provided with adjustable bearing-plates 17. The bearingplates 17have journaled in their outer ends a grinding-shaft 18, which carriesthe grinding-roll, and are provided with slots 19, in which are arrangedbolts 20, which clamp the adjustable plates to the sides of thegrindingframe. The grinding-roll has a double-conical or frusto-conicalshape to iit the angles formed by the triangular piece of sickle-bars,

and its tension on them is regulated by a spiral spring 2l, which hasits upper end attached to the grinding-frame and its lower end securedto one of the lugs of the circular plate 3. One end of thegrinding-shaft carries a pinion 22, which meshes with the drive ormaster wheel and communicates motion therefrom to the driving-shaft. Thegrinding-roll is controlled by a handle 23, which is secured to theouter end of parallel bars 24, which have their inner ends fastened tothe grinding-frame. By this construction the grinding-roll may be raisedvertically,swung rapidly, and moved forwardly and rearwardly toaccommodate itself to the sickle-bar being ground.

The sickle is held in proper position for grinding by a holder or clamp26, consisting of a base or supporting plate 27, having forwardextensions 28, provided on their upper faces with bosses 29, and anadjustable clamping-plate 30, provided at its front end with a flange 3land secured in its adjustment by a set-screw 32, arranged in a slot 33.The rear edge of the base or supporting plate of the clamp is providedwith an ear to receive the set-screw, which formsa pivot for the clampor holder to turn on to bring the sickle in proper position forgrinding. The base or supporting plate is provided at its front with aridge or shoulder 34C, extending across it and adapted to have thesickle-bar abut against it, the blades of the sickle-bar resting uponthe bosses of the enlargement.

What I claim isl. In a sickle-grinder, the combination of a base, astandard having its lower end hingedly connected with and 'rotativelymounted on v the base and provided at its upper end with IOO a socket, aspindle arranged in thei socket, a master-wheel mounted on the spindle,a grinding-frame hinged to the upper end of the standard by the spindle,and a grinding-shaft journaled in the grinding-frame and carrying vagrinding-roll and having a pinion meshing with the master-Wheel,substantially as described.

2. In asickle-grinder, the combination ot' a base, a standard having itslower end hingedly connected with and rotatively mounted on the base andprovided atA its upper end with a socket, a spindle arranged in thesocket, a master-Wheel mounted on'the spindle, a grinding-frame hingedto the upper end' of the standard by the spindle, and a grinding-shaftjournaledin the grinding-frame and carrying a grinding-roll and havingapinion meshing with the master-Wheel and having a spiral spring havingone end attached at the lower end of the standard and having its otherend Secured to the grinding-frame, substantially as described.

3. In asickle-grinder, the combination of a base, a .circular platerotatively mounted on the base and provided with lugs, a standard hingedto the lugs and provided at its upper end with a socket, a spindlesecured in the socket, a master-wheel mounted on the spindle, agrinding-frame hinged to the standard by the spindle, a grinding-shaftjournaled in the grinding-frame and carrying a grindingroll and having apinion meshing with the master-wheel, and a spiral spring secured to oneof said lugs and connected to the grinding-fraine, substantially asdescribed.

et. In a sickle-grinder, the combination of a base, astandard having itslower end hingedly connected with and rotatively mounted on the base andprovided at its upper end with a socket, a spindle arranged in thesocket, a master-Wheel mounted on the spindle, a U- shapedgrinding-frame having its stern bifurcated and hinged to the standard bythe spindle, the adj ustable bearing-plate secured to the sides of thegrinding-frame, and a shaft journaled in the bearingplates and carryinga drivingroll and having a pinion meshing with the master-wheel,substantially as described.

In testimony that I claim the foregoing as my own I have hereto aiixedmy signature in the presence of two witnesses.

ABRAHAM J. NEFF.

Witnesses:

AMos E. SHROEK, JOHN WINTERS.

